DTH Hammers and Bits

AMS stocks a wide range of Down the Hole (DTH) hammers ranging from 4 to 8 inch in diameter. We also carry a wide variety of DTH bits in numerous shank sizes and can custom make any type of bit to suit all drilling requirements.

Australasian Mining Services (Pty) Ltd is the official exclusive distributor for Shareate Tools Ltd products in Australia.

DTH QL Hammer Range (Valveless)
Model
Shank
Top Sub Thread
Total length (ex. bit)
Weight (ex. bit)
Piston Weight
Outside Diameter
Bit Range
Model
Shank
Top Sub Thread
Total length (ex. bit)
Weight (ex. bit)
Piston Weight
Outside Diameter
Bit Range (inches)
Bit Range (metric)
AMS4-D
DHD340A
2 3/8" API Reg
1030mm
39kg
8.57kg
99mm
115 - 127mm
Download Product Sheet
Model
Shank
Top Sub Thread
Total length (ex. bit)
Weight (ex. bit)
Piston Weight
Outside Diameter
Bit Range (inches)
Bit Range (metric)
AMS5-QLA
QL50A
3 1/2" API Reg
1102mm
68.5kg
15.5kg
126mm
140 - 152mm
Download Product Sheet
Model
Shank
Top Sub Thread
Total length (ex. bit)
Weight (ex. bit)
Piston Weight
Outside Diameter
Bit Range (inches)
Bit Range (metric)
WQ65BK
QL60
3 1/2" API Reg
1100mm
95.6kg
20.88kg
146mm
165 - 203mm
Download Product Sheet
Model
Shank
Top Sub Thread
Total length (ex. bit)
Weight (ex. bit)
Piston Weight
Outside Diameter
Bit Range (inches)
Bit Range (metric)
AMS8-QLA
QL80A
4 1/2" API Reg
1335mm
188kg
92.5 lbs (42kg)
7.64" (194mm)
216 - 254mm
Download Product Sheet
DTH QL Hammer Range (Valved)
Model
Shank
Top Sub Thread
Total length (ex. bit)
Weight (ex. bit)
Piston Weight
Outside Diameter
Bit Range
Model
Shank
Top Sub Thread
Total length (ex. bit)
Weight (ex. bit)
Piston Weight
Outside Diameter
Bit Range (inches)
Bit Range (metric)
SD45A
DHD340
2 3/8" API Reg
1032mm
43kg
9kg
99mm
115 - 127mm
Download Product Sheet
Model
Shank
Top Sub Thread
Total length (ex. bit)
Weight (ex. bit)
Piston Weight
Outside Diameter
Bit Range (inches)
Bit Range (metric)
AMS5-QL
QL50
3 1/2" API Reg
1154mm
73.5kg
17kg
126mm
140 - 152mm
Download Product Sheet
Model
Shank
Top Sub Thread
Total length (ex. bit)
Weight (ex. bit)
Piston Weight
Outside Diameter
Bit Range (inches)
Bit Range (metric)
AMS6-QL
QL60
3 1/2" API Reg
1211mm
105kg
23.5kg
148mm
165 - 203mm
Download Product Sheet
Model
Shank
Top Sub Thread
Total length (ex. bit)
Weight (ex. bit)
Piston Weight
Outside Diameter
Bit Range (inches)
Bit Range (metric)
AMS8-QL
QL80
4 1/2" API Reg
51.18" (1300mm)
458.5 lbs (208kg)
92.5 lbs (42kg)
7.64" (194mm)
216 - 254mm
Download Product Sheet
DTH SP (Short Shank) Hammer Range
Model
AMS4-SP
AMS5-SP
AMS6-SP
AMS7-SP175
AMS SP8
AMS SP9
Shank
SP480
SP580
SP680
SP780
SP883
SP1080
Top Sub Thread
2 3/8" API Reg
3 1/2" API Reg
3 1/2" API Reg
4 1/2" API Reg
4 1/2" API Reg
5 1/2" API Reg
Total length (ex. bit)
863mm
970mm
1131mm
1231mm
1266mm
1410mm
Weight (ex. bit)
35kg
64kg
100.5kg
160kg
221kg
289kg
Piston Weight
8kg
12kg
23kg
36.1kg
44.5kg
71.5kg
Outside Diameter
99mm
126mm
148mm
175mm
185mm
185mm
Bit Range
115-127mm
140-152mm
165-203mm
190-230mm
200 - 254mm
254 - 311mm
Product Sheet
Bit Face Selection
Flat Face
Flat Face bits are a general purpose bit that will work in all rock conditions but should be used in hard or abrasive conditions such as granite, basalt, and hard limestone. Flat face bits are the best choice for drilling in a high silica environment. Flat face bits produce good penetration rates and better erosion pattern.
Double Gauge Face
Suitable for fast penetration rates in medium to hard rock formations. This bit face is designed for high air pressures.
Convex Face
Convex Face bits are designed for fast penetration rates in softer rock like shale and limestone with low silica content.
Concave Face
Concave Face designed for unconsolidated or broken rock. These face features will help drill straighter holes in medium to hard formations.
Drop Centre
For high penetration rates in soft to medium hard and fissured rock formations. Low to medium air pressures. Maximum hole deviation control.

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